Hi @justej, I hope you had a nice day at the beach and that the weather was typically great as it usually is this time of year on the Cape and the islands. I don't know if you've been to MV before or not but as I recall the water there is a little on the cool side but tolerable, especially if it's shallow where you are.
I've only been to MV once and it was my birthday, which is Sept. 19. I went with Ruth, my girlfriend then, and we parked at an outlying lot in Falmouth and took a shuttle bus to the ferry. We were in Vineyard Haven and looked around a bit. After lunch we were in a nice residential area across from the town beach. We paused to figure out where to go next. I stood with a stone wall to my back. I was looking at a map and Ruth started giggling. I felt something solid on my shoulders and I was about to say, "Ruth, I like you too! But what are you doing?" She then said "that cat jumped on you!" I was, "huh? Cat? What cat?" And I looked around and sure enough there was a cat right on my shoulders. It was a nice cat but it jumped off and back onto the top of the wall.
We took the late afternoon ferry back and had dinner in Hyannis. So that's my recollection of Martha's Vineyard!!!